Optical microphones represent a promising alternative to the conventional capacitive MEMS microphones, especially when aiming at ultra-low noise applications. This paper reports the design and development of a SiP (System-in-Package) digital optical microphone with 71.6dBA SNR in 5×5×2mm3 package with output sensitivity of -21dBFS/Pa. The system concept is introduced, the design and modeling of the main blocks are presented and the measured results are analyzed.
Milleri, N., Wiesbauer, A., Baschirotto, A. (2023). A 22dBA digital optical MEMS microphone. In ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC) (pp.485-488). IEEE Computer Society [10.1109/ESSCIRC59616.2023.10268732].
A 22dBA digital optical MEMS microphone
Milleri N. D.;Baschirotto A.
2023
Abstract
Optical microphones represent a promising alternative to the conventional capacitive MEMS microphones, especially when aiming at ultra-low noise applications. This paper reports the design and development of a SiP (System-in-Package) digital optical microphone with 71.6dBA SNR in 5×5×2mm3 package with output sensitivity of -21dBFS/Pa. The system concept is introduced, the design and modeling of the main blocks are presented and the measured results are analyzed.
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